EP3489763B1 - Anker für die bewegungshemmung eines uhrwerks - Google Patents

Anker für die bewegungshemmung eines uhrwerks Download PDF

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Publication number
EP3489763B1
EP3489763B1 EP17203076.9A EP17203076A EP3489763B1 EP 3489763 B1 EP3489763 B1 EP 3489763B1 EP 17203076 A EP17203076 A EP 17203076A EP 3489763 B1 EP3489763 B1 EP 3489763B1
Authority
EP
European Patent Office
Prior art keywords
fork
pallet
anchor
pallets
horns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17203076.9A
Other languages
English (en)
French (fr)
Other versions
EP3489763A1 (de
Inventor
Frédéric Vaucher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP17203076.9A priority Critical patent/EP3489763B1/de
Priority to US16/164,858 priority patent/US11073795B2/en
Priority to JP2018202526A priority patent/JP6678720B2/ja
Priority to CN201811397830.7A priority patent/CN109814364B/zh
Publication of EP3489763A1 publication Critical patent/EP3489763A1/de
Application granted granted Critical
Publication of EP3489763B1 publication Critical patent/EP3489763B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements

Definitions

  • the present invention relates to an anchor for an escapement of a watch movement, in particular an escapement of the Swiss anchor type having a one-piece body.
  • the document EP2320280 discloses an escapement anchor provided with a fork intended to cooperate with an ankle mounted on a plate.
  • the anchor fork is an attached part, offset from the plane of the stick and the dart.
  • the fork is fixed to the stick by means of a tenon driven into respective holes machined in the fork and the stick, the tenon also providing the spacing between the plane of the stick and the fork.
  • the tenons are metal parts produced by turning. A current problem with low-cut tenons is that they have cutting "nipples".
  • EP2952971 which relates to an escapement anchor comprising a fork part, a pallet support part, pallets mounted on the pallet support part, and a stick.
  • the wand is used to connect the support part of the pallets to the fork part.
  • the fork portion includes a fork, a dart and a stud.
  • the rod and the support part of the pallets are integral and form a monolithic body of the anchor.
  • the fork is an insert attached to the body by means of the tenon driven into a fixing hole in the body and a fixing hole in the fork.
  • the attached fork is spaced from the body.
  • the tenon has the particularity of being made of a material having substantially no plastic domain under stress.
  • the document CH704086 mainly relates to a method of manufacturing a metal part, in particular an anchor for an escape mechanism having three levels.
  • the anchor is manufactured using a first mold etched in a substrate in which is placed a dart obtained by a LIGA process which forms the first level of the anchor.
  • the second and third level of the anchor are made using two molds formed by two superimposed layers of photoresist.
  • the anchor thus obtained comprises a one-piece rod, one end of which forms the two horns of the fork while a stinger is attached to a tenon forming an integral part of the rod.
  • a main drawback of these anchors lies in the fact that the stinger and the horns are two distinct parts leading to inaccuracies in the positioning of the sting relative to the horns when the fork or the stinger is attached to the stick, especially in the stinger and horn partition heights.
  • the assembly of the rod of the anchor with the dart or the fork is a delicate operation.
  • the invention relates to an anchor for an escapement of a watch movement according to claim 1.
  • the dependent claims describe advantageous aspects of the invention.
  • the anchor comprises a pallet support, pallets mounted on the pallet support, a fork comprising first and second horns as well as a dart, and a rod connecting the pallet support to the fork.
  • the pallet rack, stick and fork form a monolithic body of the anchor.
  • the body of the anchor is produced by a lithographic and electroforming process.
  • the process is a two-level LIGA type process.
  • the pallet support, the rod and the stinger are made in a layer of constant thickness.
  • the first and second horns of the fork have a certain height and are made in the main layer as well as in a superimposed layer.
  • the main layer and the superimposed layer form the monolithic body of the anchor.
  • the ratio between the height of the first and second horns of the fork and the constant thickness of the main layer is between 1.5 and 10.
  • the first and second horns of the fork each comprise a bevelled surface extending over the entire height of said first and second horns.
  • the body of the anchor is made from a material selected from the group of materials comprising Silicon, Silicon Nitride, Silicon Carbide, Steel, Gold or one of its alloys, Nickel, Nickel-Phosphorus, Brass, Copper-Beryllium, Nickel Silver, polymers, ceramic and amorphous metal.
  • the invention also relates to an escapement comprising an anchor as described, and a watch movement comprising the escapement.
  • an anchor 2 for a Swiss anchor type escapement for a timepiece movement comprises a fork 10, a paddle support portion 6, paddles 14, and a rod 8 interconnecting the paddle carrier portion 6 to the fork 10.
  • the rod 8 is rotatably coupled to the plate of a watch movement by means of a pivot 15.
  • the paddles 14 engage the teeth of an anchor wheel (not shown) of the escapement which is connected to a power source providing rotational torque to the wheel.
  • One of the pallets constitutes the entry pallet and the other constitutes the exit pallet, depending on the alternation of rotation of the anchor 2.
  • the fork 10 comprises a stinger 12 as well as a first horn 10a and a second horn 10b arranged on either side of the stinger 12.
  • the fork engages a plate pin of a double plate driven out on the axis of a balance wheel (not shown) intended to regulate the frequency of rotation of the anchor wheel via the anchor.
  • the first horn 10a functions as an input horn and the second horn 10b horn as an output horn.
  • the functions of the first and second horns are reversed.
  • the dart 12 makes it possible to prevent the anchor from pivoting and thus preventing the fork from passing on the wrong side of the ankle when an impact occurs.
  • the pallet support 6, the rod 8 and the fork 10 consisting of the stinger 12 and the first and second horns 10a, 10b form a monolithic body 4.
  • the ratio between the height H of the first and second horns 10a, 10b and the thickness of the rod E of the body is between 1.5 and 10.
  • the first and second horns 10a, 10b of the fork 10 each comprise a bevelled surface 11a, 11b extending over the entire height H of the first and second horns and intended to cooperate with the plate pin of the balance.
  • Body 4 can be made of different materials including Silicon, Silicon Nitride, and Silicon Carbide, Steel, Gold or one of its alloys, Nickel, Nickel-Phosphorus, Brass, Copper -Beryllium, nickel silver, polymers, ceramics and amorphous metal.
  • the body 4 of the anchor is manufactured by a two-stage LIGA (lithographic, galvanizing and forming) process, which constitutes an economical and precise manufacturing process for small parts.
  • the first level produced by this process is composed of the portion of the first and second horns 10a, 10b extending over the height HE.
  • the second level is composed of the other portion of the horns 10a, 10b, the fork 10, the rod 8 and the pallet support 6.
  • the invention makes it possible to reduce the manufacturing costs and increase the production yields of the anchor while avoiding inaccuracies in the positioning of the stinger relative to the horns, in particular in the heights of sharing of the stinger and the horns.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
  • Table Equipment (AREA)
  • Laminated Bodies (AREA)
  • Ceramic Products (AREA)

Claims (5)

  1. Anker (2) für eine Hemmung eines Uhrwerks, umfassend einen Palettenhalter (6), auf dem Palettenhalter angebrachte Paletten (14), eine Gabel (10), die ein erstes und zweites Horn (10a, 10b) und einen Sicherheitsstift (12) umfasst, und eine Stange (8), die den Palettenhalter (6) mit der Gabel (10) verbindet, wobei der Palettenhalter (6), die Stange (8) und die Gabel (10) einen monolithischen Körper (4) des Ankers bilden, wobei der Palettenhalter (6), die Stange (8) und der Sicherheitsstift (12) in einer Hauptschicht mit einer konstanten Dicke (E) hergestellt sind, dadurch gekennzeichnet, dass das erste und zweite Horn (10a, 10b) der Gabel (10) eine bestimmte Höhe (H) aufweisen und in der Hauptschicht hergestellt sind sowie in einer darüberliegenden Schicht, wobei die Hauptschicht und die darüberliegende Schicht den monolithischen Körper (4) des Ankers (2) bilden.
  2. Anker (2) nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis zwischen der Höhe (H) der Hörner (10a, 10b) und der Dicke (E) der Hauptschicht zwischen 1,5 und 10 liegt.
  3. Anker (2) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Körper (4) aus einem Material hergestellt ist, das aus der Materialgruppe ausgewählt ist, die Silicium, Siliciumnitrid, Siliciumcarbid, Stahl, Gold oder eine seiner Legierungen, Nickel, Nickel-Phosphor, Messing, Kupfer-Beryllium, Neusilber, die Polymere, Keramik und das amorphe Metall umfasst.
  4. Hemmung eines Uhrwerks, umfassend einen Anker (2) nach einem der vorangehenden Ansprüche.
  5. Uhrwerk, umfassend eine Hemmung nach vorangehendem Anspruch.
EP17203076.9A 2017-11-22 2017-11-22 Anker für die bewegungshemmung eines uhrwerks Active EP3489763B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17203076.9A EP3489763B1 (de) 2017-11-22 2017-11-22 Anker für die bewegungshemmung eines uhrwerks
US16/164,858 US11073795B2 (en) 2017-11-22 2018-10-19 Pallets for the escapement of a clock movement
JP2018202526A JP6678720B2 (ja) 2017-11-22 2018-10-29 時計ムーブメントの脱進機用パレット
CN201811397830.7A CN109814364B (zh) 2017-11-22 2018-11-22 用于钟表机芯的擒纵机构的擒纵叉

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17203076.9A EP3489763B1 (de) 2017-11-22 2017-11-22 Anker für die bewegungshemmung eines uhrwerks

Publications (2)

Publication Number Publication Date
EP3489763A1 EP3489763A1 (de) 2019-05-29
EP3489763B1 true EP3489763B1 (de) 2021-06-16

Family

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Family Applications (1)

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EP17203076.9A Active EP3489763B1 (de) 2017-11-22 2017-11-22 Anker für die bewegungshemmung eines uhrwerks

Country Status (4)

Country Link
US (1) US11073795B2 (de)
EP (1) EP3489763B1 (de)
JP (1) JP6678720B2 (de)
CN (1) CN109814364B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3783445B1 (de) * 2019-08-22 2023-06-14 ETA SA Manufacture Horlogère Suisse Einstellmechanismus einer uhr mit hohem qualitätsfaktor und minimaler schmierung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704086A2 (fr) * 2010-11-11 2012-05-15 Mimotec S A Pièces métalliques multi-niveaux obtenues par un procédé du type LIGA et méthode de fabrication s'y référant.

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1756286U (de) * 1953-09-29 1957-11-14 Gibbs Mfg And Res Corp Anordnung an hemmwerken fuer uhren oder sonstigen zeitmessvorrichtungen.
CH321184A (fr) * 1955-02-25 1957-04-30 Far Fab Assortiments Reunies Plateau de balancier pour assortiment à ancre et procédé de fabrication de ce plateau
US3335562A (en) * 1965-03-03 1967-08-15 Tissot Horlogerie Anchor escapement for timepieces
DE1756286A1 (de) * 1968-05-02 1970-03-19 Siegfried Baltzer Druckmittelbetriebener Hebebock,insbesondere Wagenheber
DE69909236T2 (de) * 1999-04-12 2004-04-22 Omega S.A. Koaxiale Ankerhemmung
CH696824A5 (fr) * 2003-04-01 2007-12-14 Chopard Manufacture Sa Ancre d'échappement.
DE602005023633D1 (de) * 2004-10-26 2010-10-28 Tag Heuer Sa Armbanduhr-regulierungsglied und mechanisches uhrwerk mit einem solchen regulierungsglied
EP1835339B1 (de) * 2006-03-15 2012-05-16 Rolex S.A. LIGA Verfahren zur Herstellung einer einzel- oder mehrlagigen metallischen Struktur und damit hergestellte Struktur
CH702202B1 (fr) 2009-11-06 2014-11-28 Nivarox Sa Echappement à ancre.
EP2400352A1 (de) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Hemmungssystem einer Uhr
JP2012063162A (ja) * 2010-09-14 2012-03-29 Seiko Instruments Inc 時計用歯車及び時計
CH704206B1 (fr) * 2010-12-14 2016-04-29 Chopard Tech Sa Ancre et échappement muni d'une telle ancre.
EP2652559B1 (de) * 2010-12-14 2019-04-24 Chopard Technologies SA Hebel und auslösemechanismus mit einem solchen hebel
US8690420B2 (en) * 2011-03-22 2014-04-08 Lvmh Swiss Manufactures Sa Mechanical watch movement
EP2557460A1 (de) * 2011-08-12 2013-02-13 Nivarox-FAR S.A. Metallanker mit Polymer-Hörnern
EP2706416B1 (de) * 2012-09-07 2015-11-18 The Swatch Group Research and Development Ltd Flexibler Anker mit konstanter Kraft
WO2014146842A1 (fr) * 2013-03-22 2014-09-25 Omega Sa Ancre d'échappement coaxial monobloc
EP2813906A1 (de) * 2013-06-12 2014-12-17 Nivarox-FAR S.A. Bauteil für Uhrwerk
JP6206877B2 (ja) * 2014-03-06 2017-10-04 セイコーインスツル株式会社 脱進機、時計用ムーブメントおよび時計
EP2952971B1 (de) * 2014-06-05 2016-10-12 Nivarox-FAR S.A. Anker für Hemmungsmechanismus eines Uhrwerks
CN104102118A (zh) * 2014-07-22 2014-10-15 福州小神龙表业技术研发有限公司 一种钟表机芯
EP3185083B1 (de) * 2015-12-23 2018-11-14 Montres Breguet S.A. Mechanischer uhrmechanismus mit einer ankerhemmung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704086A2 (fr) * 2010-11-11 2012-05-15 Mimotec S A Pièces métalliques multi-niveaux obtenues par un procédé du type LIGA et méthode de fabrication s'y référant.

Also Published As

Publication number Publication date
JP6678720B2 (ja) 2020-04-08
CN109814364B (zh) 2021-02-19
EP3489763A1 (de) 2019-05-29
US11073795B2 (en) 2021-07-27
JP2019095433A (ja) 2019-06-20
CN109814364A (zh) 2019-05-28
US20190155219A1 (en) 2019-05-23

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